Commit d73ccbc1 authored by Niels Möller's avatar Niels Möller
Browse files

(sexp_transport_format,

sexp_transport_vformat): New file, new functions.

Rev: src/nettle/sexp-transport-format.c:1.1
parent fe5c484c
/* sexp-transport-format.c
*
* Writing s-expressions in transport format.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002 Niels Mller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "sexp.h"
#include "base64.h"
#include "buffer.h"
unsigned
sexp_transport_vformat(struct nettle_buffer *buffer,
const char *format, va_list args)
{
unsigned start = 0;
unsigned length;
unsigned base64_length;
if (buffer)
{
if (!NETTLE_BUFFER_PUTC(buffer, '{'))
return 0;
start = buffer->size;
}
length = sexp_vformat(buffer, format, args);
if (!length)
return 0;
base64_length = BASE64_ENCODE_RAW_LENGTH(length);
if (buffer)
{
/* FIXME: This assumes that data is never removed from the
* buffer. That works for the current buffer, but it would be
* nice to get rid of this restriction. */
if (!nettle_buffer_space(buffer, base64_length - length))
return 0;
base64_encode_raw(buffer->contents + start,
length, buffer->contents + start);
if (!NETTLE_BUFFER_PUTC(buffer, '}'))
return 0;
}
return base64_length + 2;
}
unsigned
sexp_transport_format(struct nettle_buffer *buffer,
const char *format, ...)
{
unsigned done;
va_list args;
va_start(args, format);
done = sexp_transport_vformat(buffer, format, args);
va_end(args);
return done;
}
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